Dire Evolution

You touch a friendly beast, causing it to grow in size and sprout spines of bone from various places on its body. Until the spell ends, the target has the following benefits:

• Its physical dimensions double, increasing its size category by one size.
• Its base AC increases by 2.
• Its current and maximum hit points increase by an amount equal to 5 times your spellcasting ability modifier (minimum 5).
• It gains a +2 bonus to Strength and Constitution based ability checks and saving throws.
• Its speed is increased by 10 feet.
• Whenever it hits with an attack, it deals an additional 1d8 damage.